import trimesh

def load_mesh_scene(filename, show_edges=False):
    mesh = trimesh.load(filename)
    color = [128, 176, 255, 255]
    mesh.visual.face_colors = color
    geometries = [mesh]
    if show_edges:
        edges = mesh.face_adjacency_edges
        path = trimesh.path.Path3D(**trimesh.path.exchange.misc.edges_to_path(edges, mesh.vertices.copy()))
        geometries.append(path)
    scene = trimesh.Scene(geometries)
    return scene

mesh = load_mesh_scene("Radial scales_fixed13-5m.stl")

mesh.show()